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orbi-LAN-issues's avatar
orbi-LAN-issues
Aspirant
Jul 11, 2023

SXS80 2.5G LAN Ethernet Port 1 - Link speed limited to 1000 Mbps?

Hi, I am using a NAS (Synology DS1823xs+) that is connected via a CAT8 ethernet cable, from the NAS’ LAN 3 port (10GbE) to the LAN 1 port (2.5GbE) on a Netgear Orbi Pro 6 Satellite (SXS80) with the l...
orbi-LAN-issues's avatar
orbi-LAN-issues
Aspirant
Jul 12, 2023

FYI there is in fact a setting to change the WAN port speed (for the router, by switching between port 1-2), so it wouldn't be too farfetched to imagine there being a similar setting for the satellite. But as you point out, the link speed would normally be determined by auto-negotiation. So I am guessing the auto-negotiation on the Orbi simply doesn't work. Or perhaps the 2.5G LAN Port 1 on the Satellite was never capable of 2.5G to begin with (despite the documentation claiming that it is). UntilI I see someone show that their Insight device management page is actually reporting that port as "Link Speed: 2500M/Full" then I have my doubts 🙂

 

BruceGuo's avatar
BruceGuo
NETGEAR Expert
Jul 12, 2023

Hi 

 

We are checking this issue internally. will get back to you soon.

 

Bruce

  • orbi-LAN-issues's avatar
    orbi-LAN-issues
    Aspirant
    Jul 12, 2023
    Many thanks, Bruce. Much appreciated!
  • orbi-LAN-issues's avatar
    orbi-LAN-issues
    Aspirant
    Jul 14, 2023

    BruceGuo After contacting Synology again, I have received conflicting information regarding whether the NAS supports 2.5G or not. The first support agent supposedly quoted the network configuration file for the exact model that I am using, which states that 2500baseT/Full (and 5000baseT/Full) is supported. But the second support agent is telling me that it isn't, and that he has no idea where the first support agent managed to find that information. That being said, the fault may be due to the NAS, rather than the Orbi Pro 6 Satellite. I will continue trying to press Synology for a definitive answer regarding this and post an update once I have confirmed that the NAS is working as expected or not 

    • schumaku's avatar
      schumaku
      Guru - Experienced User
      Jul 14, 2023
      Amazing support cultures in this industry 8-)

      Unless my evaluation is fundamentally wrong, and we don't face a dual network adapter designated E10G18-T2 with two Marvell Aquantia AQC 107 here, there should be no systematic reason to fail Multi Gig link speeds. Things can differ based in the adapter chip firmware on-board in a Flash, set un place during the adapter manufacturing. Read there are more factors than just the driver implemented in the Syno OS. Just read-out the theoretical possible link speeds isn't really useful...

      Granted, there are adapters built on the more reliable Inhell X550 or decent x710 chipset, also supported by Syno - but much more expensive (about 100 USD higher at least), too.
      • schumaku's avatar
        schumaku
        Guru - Experienced User
        Jul 14, 2023

        A possible starting point would be to use the formal driver supported ethtool to check the adapter settings as well as the base ideas for some experimenting (for the NAS side of course):

         

        Viewing adapter settings
        ---------------------
        ethtool <ethX>
         
        Output example:
         
          Settings for enp1s0:
            Supported ports: [ TP ]
            Supported link modes:   100baseT/Full
                                    1000baseT/Full
                                    10000baseT/Full
                                    2500baseT/Full
                                    5000baseT/Full
            Supported pause frame use: Symmetric
            Supports auto-negotiation: Yes
            Supported FEC modes: Not reported
            Advertised link modes:  100baseT/Full
                                    1000baseT/Full
                                    10000baseT/Full
                                    2500baseT/Full
                                    5000baseT/Full
            Advertised pause frame use: Symmetric
            Advertised auto-negotiation: Yes
            Advertised FEC modes: Not reported
            Speed: 10000Mb/s
            Duplex: Full
            Port: Twisted Pair
            PHYAD: 0
            Transceiver: internal
            Auto-negotiation: on
            MDI-X: Unknown
            Supports Wake-on: g
            Wake-on: d
            Link detected: yes
         
         ---
        Note: AQC FW provides only information on actual negotiated pause frame usage.
           Link partner pause settings are not directly available.
           Thus, `Advertised pause frame use` actually shows negotiated settings.
           To see the real advertised settings, use `ethtool -a eth0`.
         
        Viewing adapter information
        ---------------------
        ethtool -i <ethX>
         
        Output example:
         driver: atlantic
         version: 2.3.1
         firmware-version: 3.1.78
         expansion-rom-version:
         bus-info: 0000:01:00.0
         supports-statistics: yes
         supports-test: no
         supports-eeprom-access: no
         supports-register-dump: yes
         supports-priv-flags: no
         
        ---------------------
         
        Keen for some more experimenting? Try to disable autonegotiation and fix the link speed eg. to 2500: 
         
        ethtool -s eth0 autoneg off speed 2500
         

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